Extensible arm



J. H. ELLIS.

EXTENSIBLE ARM. APPLICATION'HLED JULY 30,1920.

1,411,480. Patented Apr. 4, 1922'.

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A TTORNEYS,

UNITED JOHN HENRY ELLIS, 0F BENEDICT, KANSAS.

EXTENSIBLE ABM.

Application filed July so,

To (1 whom. it nuiy 0012mm:

Be it known that I, JorIN HENRY ELLIS, a citizen of the United States, and a resident of lsenedict, in the county of Wilson, and State of Kansas, have invented certain new and useful Improvements in Extensible Arms, of which the following a specification.

My invention relates to tools used in the constricting of rims to effect their removal from a tire, the purpose of my invention being the provision of a tool of this character of simple and inexpensive construction which is extremely efficient and easy to operate and is adjustable to rims of various diameters.

I will describe one form of tool embodying my invention and will then point out the novel features thereof in claim.

In the accompanying drawings:

Figure 1 is a view showing inside elevation one form of tool embodying my invention in applied position upon a rim.

Figure 2 is a view similar to Figure 1 showing the tool in front elevation.

Figure 3 is a detailed view of the tool in folded position.

Figure A is an enlarged fragmentary view showing in side elevation and partly in section the adjusting means for the tool.

Figure 5 is an enlarged detail perspectlve view of the locking key embodied in the tool shown in the preceding views.

Similar reference characters refer to similar parts in each of the several views.

My invention essentially consists of a pa1r of rim engaging arms A and A operatlvely connected to each other for longitudinal movement in opposite directions by means of an actuating lever L.

The arm A is formed of two sections 15 and 16, the section 15 being slotted for a major portion of its length to provide spaced jaws 15 which are notched 1ntervals and at corresponding points as indicated at 15". The outer end of the section 15 is formed with a hook 17 and a lug 1.8, while the inner end of the section is provided with guide ears 19. The section 16 permanently.

Specification of Letters Patent.

Patented Apr. 4, 1922.

1920. Serial No. 400,107.

manner as to permit free rotation of the key therein while at the same time preventing displacement of the same therefrom. The key 20 is further provided with flattened side portions 20 which are adapted to permit of the insertion of the key into any pair of notches 15 The handle 20 is formed in one end of the key 20 and is adapted to be gripped in effecting rotation of the key as Will be more fully described hereinafter.

In the assembled position of the section 16 with respect to the section 15, the former extends between the guide ears 19 and between the jaws 15 in such manner that the section 16 is capable of longitudinal adjustment upon the section 15. The section 16 may be locked in any of three adjusted positions by sliding the same so that the key is disposed opposite to any one of the pairs of notches 15 whereupon the section 16 is rocked so as to move the pin into the corresponding pair of notches. In order to allow this insertion of the pin, it is necessary for it to be so positioned as to present the fiat sides 20 thereof to the sides of the notches. After the pin has been inserted into the notches, it is turned so as to disaline the flat sides with respect to entrance end of the notches,

thereby locking the key against lateral displacement from the notches, and thus securing the section 16 is adjusted position with respect to the section 15. It is to be particularly noted that during movement of the section 16 into adjusted position, it is necessary that the latter section assume an angular position with respect to the section 15, and that after such adjustment has been made, the section 16' is rocked so as to move the key 20. into the corresponding pair of notches.

As shown to advantage in Figure 1, the lever L is provided at one end with a handle 21 and at the opposite end with an angular bent bifurcated portion 22 between which is pivoted one end of the section 16 at the point indicated at 23. At the free end of the bent portion 22, an arm A is pivotally connected by a bolt 24, such end of the arm A being bifurcated as shown in Figure 2. The opposite end of the arm A is provided with a hook 17 and a lug 18 of the same con struction as the hook and lug of the arm A. These hooks 17 and 17 are formed to embrace one of the gripping edges of the con ventional form of tire rim shown in Figure 1, while the lugs 18 and 18 engage the inner periphery of the rim and serve to brace the arms against inwardly swingin movement, as will be understood."

iVith the tool in applied position upon a rim as shown in Figures 1 and 2, thearms A and A are in full extended position, and the lever L disposed adjacent the arm A. \Vhen the lever L is lifted upwardly from the position shown in Figure 1 it moves the point 23 upwardly and the point 24 downwardly, thereby drawing the arms A'and A toward each other so as to effect'a constriction of the rim. With the rim in this constricted position, the tire can be readily removed from the rim.

Although I have herein shown and described only one form 01 rim removing tool embodying my invention, it is to be understood that various changes and modifications 7 may be made herein without departing from the spirit of the invention and the spirit and scope of the appended claim.

What- I claim is:

In combination, an extensible arm comprising sections, one of said sections being slotted longitndin ally to provide spaced jaws, said jaws being formed with notches in their edges arranged at intervals along the se tion, guide ears formed on the slotted section and embracing another section of the said arm, said last section being fitted between said jaws, and a locking key carried by the last section and adapted to seat within the notches ot the slotted section, said notches having restricted entrance passages and said key being so constructed that when moved to the inner end of the notches and turned to a predetermined position that a locking of the key within the notches is effected.

JOHN HENRY ELLIS. 

